CN106242270A - A kind of glass compositions, aluminium borosilicate glass and its preparation method and application and light guide plate - Google Patents

A kind of glass compositions, aluminium borosilicate glass and its preparation method and application and light guide plate Download PDF

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Publication number
CN106242270A
CN106242270A CN201610657035.1A CN201610657035A CN106242270A CN 106242270 A CN106242270 A CN 106242270A CN 201610657035 A CN201610657035 A CN 201610657035A CN 106242270 A CN106242270 A CN 106242270A
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composition
weight
glass
basis
content
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田鹏
张广涛
李俊锋
闫冬成
王丽红
胡恒广
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Tunghsu Group Co Ltd
Tunghsu Technology Group Co Ltd
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Tunghsu Group Co Ltd
Tunghsu Technology Group Co Ltd
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Priority to CN201610657035.1A priority Critical patent/CN106242270A/en
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/11—Glass compositions containing silica with 40% to 90% silica, by weight containing halogen or nitrogen
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/09—Materials and properties inorganic glass

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

The present invention relates to technical field of liquid crystal display, disclose a kind of glass compositions, aluminium borosilicate glass and its preparation method and application and light guide plate, on the basis of the weight of said composition, in terms of oxide, said composition contains the SiO of 55 65wt%2, the Al of 5 14wt%2O3, the B of 5 10wt%2O3, the MgO of 1 4wt%, the CaO of 5 8wt%, the Na of 8 14wt%2O and the BaO of 0 3wt%, and said composition is possibly together with the clarifier of 1 2wt%.The aluminium borosilicate glass of the present invention, thermal coefficient of expansion is low, mechanical strength is high, light transmittance is high, and heat-resisting moisture resistivity is good, is suitable for preparing light guide plate.

Description

A kind of glass compositions, aluminium borosilicate glass and its preparation method and application with And light guide plate
Technical field
The present invention relates to technical field of liquid crystal display, in particular it relates to a kind of glass compositions, aluminium borosilicate glass And its preparation method and application and light guide plate.
Background technology
Lcd technology has become the mainstream technology of flat pannel display industry, especially, LED (light emitting diode) backlight Liquid crystal panel has replaced CCFL (cathode fluorescent tube) because of its characteristic such as luminous uniform, brightness height, length in service life and environmental protection Liquid crystal panel becomes the market mainstream, such as LED liquid crystal television and LED liquid crystal display.Along with high-tech development and people live The raising of level, it is desirable to the fuselage of panel-like liquid crystal TV is more and more thinner, it is desirable to LCDs develops already to ultra-thin super large Becoming a development trend the biggest, meanwhile, users, to reducing mobile phone, the power consumption of panel computer, extend battery and make Also strong demand is had with the time.
One of vital part of the normal show image of LED liquid crystal panel energy is backlight module, and this backlight module is used for providing Sufficient brightness and the light source being evenly distributed, make it normally to show.Traditional backlight module generally comprise light source, reflecting plate, Some assemblies such as light guide plate, diffusion barrier and prism film, its operation principle is to utilize PMMA (polymethyl methacrylate is commonly called as Asia Gram force) transparent light guide plate, the line source pure color white light that will be sent by light source, import and be diffused into whole plate from lamella lucida end face , there is vertical reflection in face, light is from the plate face vertical with light source incidence face when light is irradiated to the reflective spot of light guide plate back up (work surface) penetrates forward.Backlight module, according to the difference of light source position, is divided into sidelight type backlight module and downward back optical mode Group two types.Wherein, direct-light type LED backlight is to be arranged in after liquid crystal panel substantial amounts of LED bulb for light equably Uniformly, but thickness requirement is higher；Side light type LED back light is then the both sides that LED is placed in screen, will by light guide plate Uniform light scatters on liquid crystal panel, because having preferable image quality and the advantage such as uniformity of luminance, light, thin, low power consumption And be widely used.In backlight module, the composition of most critical is light guide plate, and the performance and used life of light guide plate Depend primarily on the material of light guide plate.
Existing light guide plate material is mainly PMMA (polymethyl methacrylate is commonly called as acrylic), and its intensity is relatively low, sub- Gram force light guide plate is heated after making moist expansion of all stretching, and is easily deformed, is particularly susceptible and the LED being arranged on light guide plate side is squeezed Bad, affect the light transmission of light guide plate, and acrylic light guide plate more Bao Yue great be heated after making moist and be more easily deformed, and the thinnest more Greatly transport, install, use during be more easily deformed rupture impaired.Can not expire owing to existing light guide plate exists drawbacks described above People are ultra-thin to external form and the demand of the liquid crystal panel of excellent performance for foot, it would therefore be highly desirable to develop simple in construction, intensity is high, be subject to Heat is made moist and is unlikely to deform and the light guide plate of the excellent combination property such as light transmittance is high, with obtain ultrathin, imaging display performance is good and More energy-conservation liquid crystal panel.
Summary of the invention
The invention aims to overcome drawbacks described above of the prior art, it is provided that a kind of glass compositions, aluminum boron Silicate glass and its preparation method and application and light guide plate, the aluminium borosilicate glass of the present invention, thermal coefficient of expansion is low, machine Tool intensity is high, light transmittance is high, and heat-resisting moisture resistivity is good, is suitable for preparing light guide plate.
To achieve these goals, first aspect, the invention provides a kind of glass compositions, with the weight of said composition On the basis of amount, in terms of oxide, said composition contains the SiO of 55-65wt%2, the Al of 5-14wt%2O3, the B of 5-10wt%2O3、 The Na of CaO, 8-14wt% of MgO, 5-8wt% of 1-4wt%2The BaO of O and 0-3wt%, and said composition is possibly together with 1- The clarifier of 2wt%.
Preferably, described clarifier is Na2SO4, NaCl and SnO2Mixture, Na2SO4, NaCl and SnO2Weight ratio For 10-100:4-90:1, more preferably 12-70:5-70:1.
Preferably, on the basis of the weight of said composition, the content of described clarifier is 1.2-1.8wt%.
Preferably, on the basis of the weight of said composition, in terms of oxide, SiO2With Al2O3Content sum be 68- 71wt%.
Preferably, on the basis of the weight of said composition, in terms of oxide, SiO2With Al2O3Weight ratio be 4.5-9:1.
Preferably, on the basis of the weight of said composition, in terms of oxide, MgO, CaO are 8-with the content sum of BaO 12wt%.
Preferably, on the basis of the weight of said composition, the impurity iron in compositions is with Fe2O3The content of meter≤ 0.011wt%.
Preferably, on the basis of the weight of said composition, in terms of oxide, SiO2Content be 58-62wt%.
Preferably, on the basis of the weight of said composition, in terms of oxide, Al2O3Content be 8-12wt%.
Preferably, on the basis of the weight of said composition, in terms of oxide, B2O3Content be 6-9wt%.
Preferably, on the basis of the weight of said composition, in terms of oxide, the content of MgO is 1.5-4wt%.
Preferably, on the basis of the weight of said composition, in terms of oxide, the content of CaO is 5.5-8wt%.
Preferably, on the basis of the weight of said composition, in terms of oxide, Na2The content of O is 9-12wt%.
Preferably, on the basis of the weight of said composition, in terms of oxide, the content of BaO is 0.5-1.5wt%.
Second aspect, the invention provides a kind of method preparing aluminium borosilicate glass, and the method includes the present invention Described glass compositions carries out melt process, forming processes, annealing and machining processes successively.
The third aspect, the invention provides the aluminium borosilicate glass that said method prepares.
Preferably, the visible light transmissivity of described aluminium borosilicate glass is more than 91.5%, more preferably 92- 93%；Refractive index is 1.48-1.5.
Preferably, the elastic modelling quantity of described aluminium borosilicate glass is not less than 75GPa, more preferably 75-77GPa； Vickers hardness is 550-570MPa.
Preferably, the density of described aluminium borosilicate glass is at 2.45g/cm3Hereinafter, more preferably 2.40- 2.45g/cm3；Thermal coefficient of expansion in the range of 50-350 DEG C is 80 × 10-7/ DEG C below, more preferably 78 × 10-7/℃- 80×10-7/℃。
Preferably, the strain point of described aluminium borosilicate glass is 540-560 DEG C, and annealing point is 610-620 DEG C, softening point For 840-860 DEG C.
Preferably, described aluminium borosilicate glass is 10 in viscosity2Temperature corresponding during dpa s is 1460-1490 DEG C.
Fourth aspect, the invention provides a kind of light guide plate, and this light guide plate is by aluminium borosilicate glass of the present invention Make.
5th aspect, the invention provides glass compositions of the present invention or aluminium borosilicate glass is led in preparation Application in tabula rasa.
The glass compositions of the present invention, belongs to aluminium borosilicate glass system, it is adaptable to float glass process, press over system, glass tube down-drawing Etc. various Conventional glassmaking methods for producing thickness > plate glass of 0.1mm or the thickness flexible glass less than 0.1mm. The glass prepared, thermal coefficient of expansion is low, mechanical strength is high, light transmittance is high, and heat-resisting moisture resistivity is good so that the light guide plate of preparation Have that light transmittance is high, sweating and/ or heating is unlikely to deform, surface strength high, power consumption is few, length in service life and the feature such as plate body is ultra-thin.
The present invention is directed to acrylic be heated make moist yielding, mechanical strength is relatively low and cause light guide plate surface intensity relatively low, The defects such as yielding, imaging display property is poor, power consumption big, plate body is thicker and service life is relatively low, by adjusting this glass group The component of compound and constituent content, obtain that thermal coefficient of expansion is low, mechanical strength is high, light transmittance is high and that heat-resisting moisture resistivity is good is high-alkali Aluminium borosilicate glass.A preferred embodiment of the invention, contains the SiO of certain content in glass compositions2、 Al2O3、B2O3、MgO、CaO、Na2O、BaO、Na2SO4, NaCl and SnO2, utilize the glass that this glass compositions prepares, Visible light transmissivity is more than 91.5%, and refractive index is 1.48-1.5, and elastic modelling quantity is not less than 75GPa, and Vickers hardness is 550- 570MPa, density is at 2.45g/cm3Hereinafter, the thermal coefficient of expansion in the range of 50-350 DEG C is 80 × 10-7/ DEG C below, strain point For 540-560 DEG C, annealing point is 610-620 DEG C, and softening point is 840-860 DEG C, is 10 in viscosity2Temperature corresponding during dpa s For 1460-1490 DEG C, it is suitable for preparing light guide plate.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Detailed description of the invention
Hereinafter the detailed description of the invention of the present invention is described in detail.It should be appreciated that described herein specifically Embodiment is merely to illustrate and explains the present invention, is not limited to the present invention.
The end points of scope disclosed in this article and any value are not limited to this accurate scope or value, these scopes or Value should be understood to the value comprised close to these scopes or value.For numerical range, between the endpoint value of each scope, respectively Between endpoint value and the single point value of individual scope, and can obtain one or more between single point value with combination with one another New numerical range, these numerical rangies should be considered the most specifically to disclose.
First aspect, the invention provides a kind of glass compositions, on the basis of the weight of said composition, with oxide Meter, said composition contains the SiO of 55-65wt%2, the Al of 5-14wt%2O3, the B of 5-10wt%2O3, MgO, 5-of 1-4wt% The Na of CaO, 8-14wt% of 8wt%2The BaO of O and 0-3wt%, and said composition is possibly together with the clarifier of 1-2wt%.
In the glass compositions of the present invention, the present inventor is creative under study for action to be found, when with Na2SO4、 NaCl and SnO2Mixture when being clarifier, do not only have the effect clarifying de-soak, moreover it is possible to increase substantially the quality matter of glass Amount, increases glass transmission, improves strength of glass and resistance to water.In the case of it is therefore preferable that, described clarifier is Na2SO4、NaCl And SnO2Mixture, it is further preferred that Na2SO4, NaCl and SnO2Weight ratio be 10-100:4-90:1, further It is preferably 12-70:5-70:1.
Preferably, on the basis of the weight of said composition, the content of described clarifier is 1.2-1.8wt%.
In the glass compositions of the present invention, under preferable case, on the basis of the weight of said composition, in terms of oxide, SiO2With Al2O3Content sum be 68-71wt%.
In the glass compositions of the present invention, under preferable case, on the basis of the weight of said composition, in terms of oxide, SiO2With Al2O3Weight ratio be 4.5-9:1.
In the glass compositions of the present invention, under preferable case, on the basis of the weight of said composition, in terms of oxide, MgO, CaO are 8-12wt% with the content sum of BaO.
In the glass compositions of the present invention, under preferable case, on the basis of the weight of said composition, miscellaneous in compositions Matter ferrum is with Fe2O3Content≤the 0.011wt% of meter.
In the glass compositions of the present invention, under preferable case, on the basis of the weight of said composition, in terms of oxide, SiO2Content be 58-62wt%.
In the glass compositions of the present invention, under preferable case, on the basis of the weight of said composition, in terms of oxide, Al2O3Content be 8-12wt%.
In the glass compositions of the present invention, under preferable case, on the basis of the weight of said composition, in terms of oxide, B2O3Content be 6-9wt%.
In the glass compositions of the present invention, under preferable case, on the basis of the weight of said composition, in terms of oxide, The content of MgO is 1.5-4wt%.
In the glass compositions of the present invention, under preferable case, on the basis of the weight of said composition, in terms of oxide, The content of CaO is 5.5-8wt%.
In the glass compositions of the present invention, under preferable case, on the basis of the weight of said composition, in terms of oxide, Na2The content of O is 9-12wt%.
In the glass compositions of the present invention, under preferable case, on the basis of the weight of said composition, in terms of oxide, The content of BaO is 0.5-1.5wt%.
It will be understood by those skilled in the art that in the glass compositions of the present invention, the SiO that compositions contains2、 Al2O3、B2O3、MgO、CaO、Na2O and BaO, refer to said composition contain containing Si compound, containing Al compound, boride alloy, contain Mg compound, containing Ca compound, containing Na compound and the compound Han Ba, such as the carbonate containing aforementioned each element, nitrate, sulphuric acid Salt, oxide etc., and the content of the aforementioned each component mentioned is all in terms of the oxide of each element, the carbonic acid of concrete each element Salt, nitrate, sulfate, being chosen as it is known to those skilled in the art that and do not repeat them here of oxide.
In the glass compositions of the present invention, when utilizing it to prepare aluminium borosilicate glass, why enable to glass There is excellent combination property, be mainly attributed to cooperating between each component, especially SiO in compositions2、Al2O3、 B2O3、MgO、CaO、Na2O、BaO、Na2SO4, NaCl and SnO2Between mating reaction, the most aforementioned certain content each Cooperating between component.
Second aspect, the invention provides a kind of aluminium borosilicate glass, on the basis of the weight of described glass, this glass SiO containing 55-65wt%2, the Al of 5-14wt%2O3, the B of 5-10wt%2O3, CaO, 8-of MgO, 5-8wt% of 1-4wt% The Na of 14wt%2The clarifier of BaO and 1-2wt% of O, 0-3wt%.
Preferably, clarifier is Na2SO4, NaCl and SnO2Mixture, Na2SO4, NaCl and SnO2Weight ratio be 10- 100:4-90:1, more preferably 12-70:5-70:1；
Preferably, on the basis of the weight of this glass, the content of described clarifier is 1.2-1.8wt%.
Preferably, on the basis of the weight of this glass, SiO2With Al2O3Content sum be 68-71wt%.
Preferably, on the basis of the weight of this glass, SiO2With Al2O3Weight ratio be 4.5-9:1.
Preferably, on the basis of the weight of this glass, MgO, CaO are 8-12wt% with the content sum of BaO.
Preferably, on the basis of the weight of this glass, the impurity iron in glass is with Fe2O3Content≤the 0.011wt% of meter.
Preferably, on the basis of the weight of this glass, SiO2Content be 58-62wt%.
Preferably, on the basis of the weight of this glass, Al2O3Content be 8-12wt%.
Preferably, on the basis of the weight of this glass, B2O3Content be 6-9wt%.
Preferably, on the basis of the weight of this glass, the content of MgO is 1.5-4wt%.
Preferably, on the basis of the weight of this glass, the content of CaO is 5.5-8wt%.
Preferably, on the basis of the weight of this glass, Na2The content of O is 9-12wt%.
Preferably, on the basis of the weight of this glass, the content of BaO is 0.5-1.5wt%.
The third aspect, the invention provides a kind of method preparing aluminium borosilicate glass, and the method includes the present invention Described glass compositions carries out melt process, forming processes, annealing and machining processes successively.
In the method for the present invention, the concrete restriction for glass compositions refers to the description of aforementioned corresponding contents, at this Repeat no more.
In the case of process of the present invention it is preferred, the condition of melt process includes: temperature is 1480 DEG C-1500 DEG C, the time For 7-10h.It addition, those skilled in the art can determine concrete melt temperature and melting time according to practical situation, this is As it is known to those skilled in the art that and do not repeat them here.
In the case of process of the present invention it is preferred, the condition of annealing includes: temperature is 610-620 DEG C, and the time is more than 0.5h.It addition, those skilled in the art can determine concrete annealing temperature and annealing time according to practical situation, this is ability Known to field technique personnel, do not repeat them here.
In the method for the present invention, for machining processes, there is no particular limitation, can be common various in this area Machining mode, can be such as the product that annealing is obtained carry out cutting, grind, polishing etc..Wherein, cut permissible The glass blocks using full automatic inside diameter slicer to will be cooled to room temperature cuts into the sheet glass that thickness is 0.5-2mm, grinds and throws Light can use planetary double-faced grinding and polishing machine that described sheet glass is ground polishing.
Fourth aspect, the invention provides the aluminium borosilicate glass that said method prepares.
Under preferable case, the visible light transmissivity of described aluminium borosilicate glass is more than 91.5%, more preferably 92- 93%；Refractive index is 1.48-1.5.
Under preferable case, the elastic modelling quantity of described aluminium borosilicate glass is not less than 75GPa, more preferably 75- 77GPa；Vickers hardness is 550-570MPa.
Under preferable case, the density of described aluminium borosilicate glass is at 2.45g/cm3Hereinafter, more preferably 2.40- 2.45g/cm3；Thermal coefficient of expansion in the range of 50-350 DEG C is 80 × 10-7/ DEG C below, more preferably 78 × 10-7/℃- 80×10-7/℃。
Under preferable case, the strain point of described aluminium borosilicate glass is 540-560 DEG C, and annealing point is 610-620 DEG C, soft Change point for 840-860 DEG C.
Under preferable case, described aluminium borosilicate glass is 10 in viscosity2Temperature corresponding during dpa s is 1460-1490 ℃。
5th aspect, the invention provides a kind of light guide plate, and this light guide plate is by aluminium borosilicate glass of the present invention Make.
6th aspect, the invention provides glass compositions of the present invention or aluminium borosilicate glass is led in preparation Application in tabula rasa.
Embodiment
Hereinafter will be described the present invention by embodiment.In following example, if no special instructions, used Each material all can be by commercially available, and if no special instructions, method used is the conventional method of this area.
In following example and comparative example, measuring glass density with reference to ASTM C-693, unit is g/cm3。
The thermal expansion coefficient of glass α of horizontal expander instrument mensuration 50-350 DEG C is used with reference to ASTM E-22850/350, with averagely The coefficient of expansion represents, unit is 10-7/℃。
Using material mechanical test machine to measure glass Young's modulus with reference to ASTM C-623, unit is GPa.
Using Vickers to measure glass Vickers hardness with reference to ASTM E-384, unit is MPa.
(viscosity is to use glass annealing point and strain point tester to measure the annealing point of glass with reference to ASTM C-336 1013Temperature during dpa s) and strain point (viscosity is 1014..5Temperature during dpa s), unit is DEG C.
(viscosity is 10 to use glass softening point analyzer to measure softening point with reference to ASTM C-3387.6Temperature during dpa s Degree), unit is DEG C.
Use drum type brake to rotate high-temperature viscosimeter with reference to ASTM C-965 and measure glass high temperature viscosity-temperature curve, by Fulcher (also referred to as VFT formula) is calculated viscosity is 102Temperature corresponding during dpa s, is clarifying temp, and unit is DEG C.
Refractive index nDEmploying Abbe refractometer is measured.
Visible light transmittance rate uses ultraviolet-visible spectrophotometer to be measured, and unit is %.
Glass resistance to water is measured with reference to JB/T10576-2006.
Embodiment 1-8
Forming according to the glass shown in table 1 and weigh each component, mixing, by compound, (impurity iron in compound is with Fe2O3 Content≤the 0.011wt% of meter) pour in platinum crucible, then heat 8 hours in the high temperature furnace of 1500 DEG C, and use platinum Rod stirring is to discharge bubble.The vitreous humour melted is poured in rustless steel cast iron grinding tool, is configured to the both bulk glasses of regulation Goods, then by glass in the lehr 610 DEG C anneal 1 hour, close power supply furnace cooling to 25 DEG C.By glass Carrying out cutting, grind, polish, thickness polishing obtained is that the used in glass products deionized water of 0.7mm cleans up and dries, Prepare glass finished-product.Respectively the various performances of each glass finished-product are measured, the results are shown in Table 1.
Table 1
Embodiment 9-12, comparative example 1
According to embodiment 5 method, except for the difference that, compound composition (corresponding glass composition) and the performance survey of product that obtains Surely the results are shown in Table 2.
Table 2
Embodiment 5 in table 1 being compared with the data of embodiment 9-11 in table 2 and understand, clarifier is Na2SO4, NaCl and SnO2Mixture, and Na2SO4, NaCl and SnO2Weight ratio when being 10-100:4-90:1, it is possible to improve glass further Visible light transmissivity and strength of glass.
Embodiment 5 in table 1 is compared with the data of embodiment 12 in table 2 and understands, SiO2With Al2O3Content sum be 68- 71wt%, SiO2With Al2O3Weight ratio when be 4.5-9:1, MgO, CaO being 8-12wt% with the content sum of BaO, it is possible to enter One step improves the mechanical strength of glass, reduces thermal coefficient of expansion further.
The glass sample that above-described embodiment 1-12 prepares is positioned over hot and humid environment, and (temperature is 60 DEG C, humidity It is 95%) after 7 days, examine its surface of discovery and there is no notable change, the resistance to environment capacity of glass sample of the present invention is described relatively By force, the most moisture resistance heat-resisting being unlikely to deform, above-mentioned indices is satisfied by the performance requirement of light guide plate.And under the same conditions, Then there is macroscopic deformation in the glass sample surface that comparative example 1 prepares.
Embodiment 5 in table 1 being compared with the data of comparative example 1 in table 2 and understand, the method for the present invention utilizes and contains containing specific The SiO of amount2、Al2O3、B2O3、MgO、CaO、Na2O、BaO、Na2SO4, NaCl and SnO2The glass for preparing of glass compositions Glass, has significant lower thermal coefficient of expansion, higher mechanical strength, a higher light transmittance, and preferable heat-resisting moisture resistivity is suitableeer Light guide plate is prepared in conjunction so that light guide plate has light transmittance height, sweating and/ or heating is unlikely to deform, surface strength is high, power consumption is few, use Life-span length and the feature such as plate body is ultra-thin.
Data in table 1-2 being compared and understand, the method for the present invention utilizes the SiO containing certain content2、Al2O3、B2O3、 MgO、CaO、Na2O、BaO、Na2SO4, NaCl and SnO2The glass for preparing of glass compositions, it is seen that light transmission rate is big In 91.5%, refractive index is 1.48-1.5, and elastic modelling quantity is not less than 75GPa, and Vickers hardness is 550-570MPa, and density exists 2.45g/cm3Hereinafter, the thermal coefficient of expansion in the range of 50-350 DEG C is 80 × 10-7/ DEG C below, strain point is 540-560 DEG C, moves back Fire point is for 610-620 DEG C, and softening point is 840-860 DEG C, is 10 in viscosity2Temperature corresponding during dpa s is 1460-1490 DEG C. Prepared by present invention glass composition based on each component oxide coefficient of expansion combinatorial principle, the design of refractory oxides combinatorial principle Glass, have excellence physicochemical property, light guide plate can be prepared.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned embodiment Detail, in the technology concept of the present invention, technical scheme can be carried out multiple simple variant, this A little simple variant belong to protection scope of the present invention.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, at not lance In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to various can The compound mode of energy illustrates the most separately.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as it is without prejudice to this The thought of invention, it should be considered as content disclosed in this invention equally.

Claims (15)

1. a glass compositions, it is characterised in that on the basis of the weight of said composition, in terms of oxide, said composition SiO containing 55-65wt%2, the Al of 5-14wt%2O3, the B of 5-10wt%2O3, CaO, 8-of MgO, 5-8wt% of 1-4wt% The Na of 14wt%2The BaO of O and 0-3wt%, and said composition is possibly together with the clarifier of 1-2wt%.
Compositions the most according to claim 1, it is characterised in that described clarifier is Na2SO4, NaCl and SnO2Mixing Thing, Na2SO4, NaCl and SnO2Weight ratio be 10-100:4-90:1, preferably 12-70:5-70:1；
Preferably, on the basis of the weight of said composition, the content of described clarifier is 1.2-1.8wt%.
Compositions the most according to claim 1 and 2, it is characterised in that on the basis of the weight of said composition, with oxide Meter, SiO2With Al2O3Content sum be 68-71wt%.
Compositions the most according to claim 1 and 2, it is characterised in that on the basis of the weight of said composition, with oxide Meter, SiO2With Al2O3Weight ratio be 4.5-9:1.
Compositions the most according to claim 1 and 2, it is characterised in that on the basis of the weight of said composition, with oxide Meter, MgO, CaO are 8-12wt% with the content sum of BaO.
Compositions the most according to claim 1 and 2, it is characterised in that on the basis of the weight of said composition, in compositions Impurity iron with Fe2O3Content≤the 0.011wt% of meter.
Compositions the most according to claim 1 and 2, it is characterised in that on the basis of the weight of said composition, with oxide Meter, SiO2Content be 58-62wt%；
Preferably, on the basis of the weight of said composition, in terms of oxide, Al2O3Content be 8-12wt%；
Preferably, on the basis of the weight of said composition, in terms of oxide, B2O3Content be 6-9wt%；
Preferably, on the basis of the weight of said composition, in terms of oxide, the content of MgO is 1.5-4wt%；
Preferably, on the basis of the weight of said composition, in terms of oxide, the content of CaO is 5.5-8wt%；
Preferably, on the basis of the weight of said composition, in terms of oxide, Na2The content of O is 9-12wt%；
Preferably, on the basis of the weight of said composition, in terms of oxide, the content of BaO is 0.5-1.5wt%.
8. the method preparing aluminium borosilicate glass, it is characterised in that the method includes any one in claim 1-7 Glass compositions described in Xiang carries out melt process, forming processes, annealing and machining processes successively.
9. the aluminium borosilicate glass that the method described in claim 8 prepares.
Aluminium borosilicate glass the most according to claim 9, it is characterised in that described aluminium borosilicate glass visible Light transmission rate is more than 91.5%, preferably 92-93%；Refractive index is 1.48-1.5.
11. aluminium borosilicate glass according to claim 9, it is characterised in that the elasticity of described aluminium borosilicate glass Modulus is not less than 75GPa, preferably 75-77GPa；Vickers hardness is 550-570MPa.
12. aluminium borosilicate glass according to claim 9, it is characterised in that the density of described aluminium borosilicate glass At 2.45g/cm3Hereinafter, preferably 2.40-2.45g/cm3；Thermal coefficient of expansion in the range of 50-350 DEG C is 80 × 10-7/ DEG C with Under, preferably 78 × 10-7/℃-80×10-7/℃。
13. aluminium borosilicate glass according to claim 9, it is characterised in that the strain of described aluminium borosilicate glass Point is for 540-560 DEG C, and annealing point is 610-620 DEG C, and softening point is 840-860 DEG C, is 10 in viscosity2Temperature corresponding during dpa s Degree is for 1460-1490 DEG C.
14. 1 kinds of light guide plates, it is characterised in that this light guide plate is by the aluminoborosilicate described in any one in claim 9-13 Glass is made.
In 15. claim 1-7 in glass compositions described in any one or claim 9-13 described in any one Aluminium borosilicate glass application in preparing light guide plate.
CN201610657035.1A 2016-08-11 2016-08-11 A kind of glass compositions, aluminium borosilicate glass and its preparation method and application and light guide plate Pending CN106242270A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111253065A (en) * 2019-12-26 2020-06-09 杨德宁 Application of glass composition with high softening point
CN113121110A (en) * 2021-04-13 2021-07-16 南通向阳光学元件有限公司 High-uniformity colored band-pass filter optical glass

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WO2015186486A1 (en) * 2014-06-04 2015-12-10 旭硝子株式会社 Glass plate for light-guide plate
CN105264284A (en) * 2013-09-03 2016-01-20 日本电气硝子株式会社 Light guide plate
CN105601102A (en) * 2015-12-23 2016-05-25 芜湖东旭光电装备技术有限公司 High-alkaline silico-aluminate glass, light guide plate, backlight module, liquid crystal display panel, liquid crystal display terminal and glass preparation method

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US20020010066A1 (en) * 2000-06-01 2002-01-24 Asahi Glass Company, Limited Glass for substrate and glass substrate
CN102015566A (en) * 2008-06-27 2011-04-13 日本电气硝子株式会社 Toughened glass and method for producing the same
CN105264284A (en) * 2013-09-03 2016-01-20 日本电气硝子株式会社 Light guide plate
WO2015186486A1 (en) * 2014-06-04 2015-12-10 旭硝子株式会社 Glass plate for light-guide plate
CN105601102A (en) * 2015-12-23 2016-05-25 芜湖东旭光电装备技术有限公司 High-alkaline silico-aluminate glass, light guide plate, backlight module, liquid crystal display panel, liquid crystal display terminal and glass preparation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111253065A (en) * 2019-12-26 2020-06-09 杨德宁 Application of glass composition with high softening point
CN113121110A (en) * 2021-04-13 2021-07-16 南通向阳光学元件有限公司 High-uniformity colored band-pass filter optical glass

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Application publication date: 20161221